/*
 * 	This program is free software; you can redistribute it and/or modify it under the terms of 
 * the GNU AFFERO GENERAL PUBLIC LICENSE as published by the Free Software Foundation; either version 3 of the License, 
 * or (at your option) any later version. 
 * 
 * 	This program is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
 * See the GNU AFFERO GENERAL PUBLIC LICENSE for more details. 
 * 	You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE along with this program; 
 * if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package com.meidusa.amoeba.parser.function;

import java.util.List;

import com.meidusa.amoeba.parser.expression.Expression;
import com.meidusa.amoeba.sqljep.ParseException;

/**
 * 
 * @author <a href=mailto:piratebase@sina.com>Struct chen</a>
 *
 */
public class ToDate extends AbstractFunction {
	
	
	public ToDate(String name){
		super(name);
	}
	
	@SuppressWarnings("unchecked")
	public Comparable evaluate(List<Expression> list,Object[] parameters) throws ParseException {
		Comparable result = null;
		if(list.size() == 1){
			Comparable param1 = list.get(0).evaluate(parameters);
			result = com.meidusa.amoeba.sqljep.function.ToDate.to_date(param1);
		}else if(list.size() == 2){
			Comparable param1 = list.get(0).evaluate(parameters);
			Comparable param2 = list.get(1).evaluate(parameters);
			result = com.meidusa.amoeba.sqljep.function.ToDate.to_date(param1,param2);
		}
		return result;
	}

}
